How can I fix an unexpected HTML error on my about page?

Topic summary

A user encountered a sudden HTML error on their Shopify store’s about page that wasn’t present previously. They shared a screenshot and posted their theme code, which appears to contain corrupted or reversed text strings in the settings section.

Key observations:

  • The code snippet shows normal Liquid template syntax at the beginning (handling section blocks and width settings)
  • The latter portion contains garbled text that appears to be reversed/backwards (e.g., “lebal.elddim-pot.snoitpo.tnemngila”)
  • This corruption likely occurred in the advanced content section’s settings configuration

Current status:

  • The issue remains unresolved with no responses yet
  • The malformed code needs to be identified and corrected, possibly by restoring from a backup or manually fixing the reversed strings in the theme editor
Summarized with AI on November 23. AI used: claude-sonnet-4-5-20250929.

Hi There,

On my about page, there is suddenly an HTML Error, It wasn’t there before.

Can someone help me to find out what I can do about it?

{%- if section.settings.space_around -%}

{% endif %} {%- if section.settings.alt -%}
{% endif %} {%- unless section.settings.full_width -%}
{%- endunless -%}
{%- for block in section.blocks -%} {%- liquid case block.settings.width when '25%' assign block_width = 'small--one-whole one-quarter' when '33%' assign block_width = 'small--one-whole one-third' when '50%' assign block_width = 'small--one-whole one-half' when '66%' assign block_width = 'small--one-whole two-thirds' when '75%' assign block_width = 'small--one-whole three-quarters' when '100%' assign block_width = 'one-whole' endcase -%}
{%- case block.type -%} {%- when 'liquid' -%} {%- if block.settings.code != blank -%}
{{ block.settings.code }}
{%- else -%}
{{ 'home_page.onboarding.no_content' | t }}
{%- endif -%} {%- when 'image' -%} {%- endcase -%}
{%- endfor -%} {%- if section.blocks.size == 0 -%}
{{ 'home_page.onboarding.no_content' | t }}
{%- endif -%}
{%- unless section.settings.full_width -%}
{%- endunless -%} {%- if section.settings.alt -%}
{%- endif -%} {%- if section.settings.space_around -%}
{%- endif -%}

{% schema %}
{
“name”: “t:sections.advanced-content.name”,
“max_blocks”: 3,
“settings”: [
{
“type”: “checkbox”,
“id”: “full_width”,
“label”: “t:sections.advanced-content.settings.full_width.label”
},
{
“type”: “checkbox”,
“id”: “space_around”,
“label”: “t:sections.advanced-content.settings.space_around.label”,
“default”: true
},
{
“type”: “checkbox”,
“id”: “alt”,
“label”: “t:sections.advanced-content.settings.alt.label”
}
],
“blocks”: [
{
“type”: “liquid”,
“name”: “t:sections.advanced-content.blocks.html.name”,
“settings”: [
{
“type”: “liquid”,
“id”: “code”,
“label”: “t:sections.advanced-content.blocks.html.settings.code.label”,
“default”: “

Custom content

Use this advanced section to build your own layouts or to add custom HTML, Liquid, or scripts.

”,
“info”: “t:sections.advanced-content.blocks.html.settings.code.info”
},
{
“type”: “select”,
“id”: “width”,
“label”: “t:sections.advanced-content.blocks.html.settings.width.label”,
“default”: “100%”,
“options”: [
{
“value”: “25%”,
“label”: “25%”
},
{
“value”: “33%”,
“label”: “33%”
},
{
“value”: “50%”,
“label”: “50%”
},
{
“value”: “66%”,
“label”: “66%”
},
{
“value”: “75%”,
“label”: “75%”
},
{
“value”: “100%”,
“label”: “100%”
}
]
},
{
“type”: “select”,
“id”: “alignment”,
“label”: “t:sections.advanced-content.blocks.html.settings.alignment.label”,
“default”: “center”,
“info”: “t:sections.advanced-content.blocks.html.settings.alignment.info”,
“options”: [
{
“value”: “top-middle”,
“label”: “t:sections.advanced-content.blocks.html.settings.alignment.options.top-middle.label”
},
{
“value”: “center”,
“label”: “t:sections.advanced-content.blocks.html.settings.alignment.options.center.label”
},
{
“value”: “bottom-middle”,
“label”: “t:sections.advanced-content.blocks.html.settings.alignment.options.bottom-middle.label”
}
]
}
]
},
{
“type”: “image”,
“name”: “t:sections.advanced-content.blocks.image.name”,
“settings”: [
{
“type”: “image_picker”,
“id”: “image”,
“label”: “t:sections.advanced-content.blocks.image.settings.image.label”
},
{
“type”: “url”,
“id”: “link”,
“label”: “t:sections.advanced-content.blocks.image.settings.link.label”
},
{
“type”: “select”,
“id”: “width”,
“label”: “t:sections.advanced-content.blocks.image.settings.width.label”,
“default”: “100%”,
“options”: [
{
“value”: “25%”,
“label”: “25%”
},
{
“value”: “33%”,
“label”: “33%”
},
{
“value”: “50%”,
“label”: “50%”
},
{
“value”: “66%”,
“label”: “66%”
},
{
“value”: “75%”,
“label”: “75%”
},
{
“value”: “100%”,
“label”: “100%”
}
]
},
{
“type”: “select”,
“id”: “alignment”,
“label”: “t:sections.advanced-content.blocks.image.settings.alignment.label”,
“default”: “center”,
“info”: “t:sections.advanced-content.blocks.image.settings.alignment.info”,
“options”: [
{
“value”: “top-middle”,
“label”: “t:sections.advanced-content.blocks.image.settings.alignment.options.top-middle.label”
},
{
“value”: “center”,
“label”: “t:sections.advanced-content.blocks.image.settings.alignment.options.center.label”
},
{
“value”: “bottom-middle”,
“label”: “t:sections.advanced-content.blocks.image.settings.alignment.options.bottom-middle.label”
}
]
}
]
}
],
“presets”: [
{
“name”: “t:sections.advanced-content.presets.custom_content.name”,
“blocks”: [
{
“type”: “image”,
“settings”: {
“width”: “50%”
}
},
{
“type”: “liquid”,
“settings”: {
“width”: “50%”
}
}
]
}
]
}
{% endschema %}